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286702df6b
Change-Id: If426fc15f7bce54b51eaac3354061684cd5b0e17 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/207129 Commit-Queue: Johnni Winther <johnniwinther@google.com> Reviewed-by: Dmitry Stefantsov <dmitryas@google.com>
36 lines
1.1 KiB
Dart
36 lines
1.1 KiB
Dart
#!/usr/bin/env dart
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// Copyright (c) 2016, the Dart project authors. Please see the AUTHORS file
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// for details. All rights reserved. Use of this source code is governed by a
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// BSD-style license that can be found in the LICENSE file.
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import 'package:kernel/kernel.dart';
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import 'dart:io';
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/// Builds N copies of the AST for the given component.
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/// Pass --print-metrics to the Dart VM to measure the memory use.
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main(List<String> args) {
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if (args.length == 0) {
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print('USAGE: ast_membench FILE.dill NUM_COPIES');
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exit(1);
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}
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String filename = args[0];
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const int defaultCopyCount = 10;
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int copyCount = args.length == 2 ? int.parse(args[1]) : defaultCopyCount;
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List<Component> keepAlive = <Component>[];
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for (int i = 0; i < copyCount; ++i) {
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keepAlive.add(loadComponentFromBinary(filename));
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}
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print('$copyCount copies built');
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if (args.contains('-v')) {
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// Use of the list for something to avoid premature GC.
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int size = 0;
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for (var component in keepAlive) {
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size += component.libraries.length;
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}
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print(size);
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}
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}
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